Preface
Open Rstudio to do the practicals. Note that tasks with * are optional.
R packages
In this practical, a number of R packages are used. The packages used (with versions that were used to generate the solutions) are:
survival (version: 3.5.7)
R version 4.3.2 (2023-10-31 ucrt)
Dataset
For this practical, we will use the heart and retinopathy data sets from the survival package. More details about the data sets can be found in:
https://stat.ethz.ch/R-manual/R-devel/library/survival/html/heart.html
https://stat.ethz.ch/R-manual/R-devel/library/survival/html/retinopathy.html
Indexing and Subsetting
Sometimes we want to obtain a subset of the data sets before investigating the descriptive statistics and performing the statistical analysis.
Indexing
Using the heart data set:
Select the first row.
Select the first column.
Select the column surgery.
start stop event age year surgery transplant id
1 0 50 1 -17.15537 0.1232033 0 0 1
[1] 0.0 0.0 0.0 1.0 0.0 36.0 0.0 0.0 0.0 51.0 0.0 0.0 0.0 12.0 0.0
[16] 26.0 0.0 0.0 17.0 0.0 37.0 0.0 0.0 28.0 0.0 0.0 20.0 0.0 0.0 18.0
[31] 0.0 8.0 0.0 12.0 0.0 3.0 0.0 83.0 0.0 25.0 0.0 0.0 0.0 71.0 0.0
[46] 0.0 16.0 0.0 0.0 17.0 0.0 51.0 0.0 23.0 0.0 0.0 46.0 0.0 19.0 0.0
[61] 4.5 0.0 2.0 0.0 41.0 0.0 58.0 0.0 0.0 0.0 0.0 1.0 0.0 2.0 0.0
[76] 21.0 0.0 0.0 36.0 0.0 83.0 0.0 32.0 0.0 0.0 41.0 0.0 0.0 10.0 0.0
[91] 67.0 0.0 0.0 21.0 0.0 78.0 0.0 3.0 0.0 0.0 0.0 27.0 0.0 33.0 0.0
[106] 12.0 0.0 0.0 57.0 0.0 3.0 0.0 10.0 0.0 5.0 0.0 31.0 0.0 4.0 0.0
[121] 27.0 0.0 5.0 0.0 0.0 46.0 0.0 0.0 210.0 0.0 67.0 0.0 26.0 0.0 6.0
[136] 0.0 0.0 32.0 0.0 37.0 0.0 0.0 8.0 0.0 60.0 0.0 31.0 0.0 139.0 0.0
[151] 160.0 0.0 0.0 310.0 0.0 28.0 0.0 4.0 0.0 2.0 0.0 13.0 0.0 21.0 0.0
[166] 96.0 0.0 0.0 38.0 0.0 0.0 0.0
surgery
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
10 0
11 0
12 0
13 0
14 0
15 0
16 0
17 0
18 0
19 0
20 0
21 0
22 1
23 0
24 0
25 0
26 0
27 0
28 0
29 0
30 0
31 0
32 0
33 0
34 0
35 0
36 0
37 0
38 0
39 0
40 0
41 0
42 0
43 0
44 0
45 0
46 0
47 0
48 0
49 0
50 0
51 0
52 0
53 0
54 0
55 0
56 0
57 0
58 0
59 0
60 0
61 0
62 0
63 0
64 1
65 1
66 1
67 1
68 0
69 1
70 1
71 0
72 0
73 1
74 1
75 0
76 0
77 0
78 1
79 1
80 1
81 1
82 0
83 0
84 0
85 0
86 0
87 0
88 0
89 0
90 0
91 0
92 0
93 1
94 1
95 1
96 1
97 0
98 0
99 0
100 0
101 0
102 0
103 1
104 1
105 0
106 0
107 0
108 0
109 0
110 0
111 0
112 0
113 0
114 0
115 0
116 0
117 0
118 0
119 0
120 0
121 0
122 0
123 0
124 0
125 1
126 1
127 0
128 0
129 0
130 0
131 0
132 1
133 1
134 0
135 0
136 0
137 0
138 0
139 0
140 0
141 0
142 0
143 0
144 0
145 0
146 0
147 0
148 0
149 0
150 1
151 1
152 0
153 0
154 0
155 0
156 0
157 1
158 1
159 0
160 0
161 0
162 0
163 0
164 0
165 0
166 0
167 0
168 1
169 1
170 0
171 0
172 0
[1] 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
[48] 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 0 1 1 0 0 1 1 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 1 1
[95] 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0
[142] 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 1 0 0 0
[1] 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
[48] 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 0 1 1 0 0 1 1 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 1 1
[95] 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0
[142] 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 1 0 0 0
Create a matrix that takes the values 1:4 and has 2 rows and 2 columns. You can name this object mat. Select the second row of all columns.
<- matrix (1 : 4 , 2 , 2 )2 , ]
Create an array that consists of 2 matrices. Matrix 1 will consist of the values 1:4 and matrix 2 will consist of the values 5:8. Both matrices will have 2 columns and 2 rows. Give the name ar1 to the this array. Select the 2nd row of all columns from each matrix.
<- array (data = 1 : 8 , dim = c (2 , 2 , 2 ))2 , , ]
[,1] [,2]
[1,] 2 6
[2,] 4 8
Subsetting
Using the retinopathy data set:
Select the futime for all adult patients.
Select all the variables for patients that received treatment.
$ futime[retinopathy$ type == "adult" ]
[1] 46.23 46.23 58.07 13.83 46.43 48.53 44.40 7.90 39.57 39.57 30.83 38.57 66.27 14.10 58.43
[16] 41.40 57.43 57.43 61.40 0.60 60.27 26.37 5.77 1.33 25.63 21.90 46.90 22.00 25.80 13.87
[31] 5.73 48.30 9.90 9.90 46.73 2.67 18.73 13.83 32.03 4.27 69.87 13.90 56.57 56.57 8.30
[46] 8.30 21.57 18.43 31.63 31.63 39.77 39.77 52.33 5.83 4.10 12.20 38.07 12.73 54.10 54.10
[61] 50.47 50.47 38.83 38.83 26.23 40.03 38.07 38.07 65.23 65.23 7.07 66.77 9.63 9.63 33.63
[76] 33.63 63.33 27.60 38.47 1.63 55.23 55.23 52.77 25.30 9.87 1.70 38.77 19.40 13.83 1.57
[91] 46.50 13.37 42.47 22.20 38.73 38.73 51.13 51.13 55.33 55.33 12.93 4.97 54.20 26.47 24.43
[106] 9.87 50.23 50.23 42.23 42.23 66.93 66.93 67.47 38.57 3.67 3.67 20.07 8.83 55.13 55.13
[121] 42.20 42.20 38.27 38.27 63.63 26.17 54.37 54.37 54.60 10.97 63.87 21.10 62.37 43.70 62.80
[136] 62.80 63.33 14.37 58.53 58.53 58.07 58.07 58.50 58.50 1.50 14.37 51.10 51.10 49.93 6.57
[151] 46.27 46.27 10.60 10.60 42.77 42.77 74.97 61.83 62.00 62.00 51.60 42.33 49.97 2.90 41.93
[166] 41.93
$ trt == 1 , ]
id laser eye age type trt futime status risk
1 5 argon left 28 adult 1 46.23 0 9
3 14 argon right 12 juvenile 1 42.50 0 8
5 16 xenon right 9 juvenile 1 42.27 0 11
7 25 argon left 9 juvenile 1 20.60 0 11
9 29 xenon left 13 juvenile 1 38.77 0 9
11 46 xenon right 12 juvenile 1 65.23 0 9
13 49 argon right 8 juvenile 1 63.50 0 8
15 56 xenon right 12 juvenile 1 23.17 0 8
17 61 argon right 16 juvenile 1 1.47 0 9
19 71 argon right 21 adult 1 58.07 0 9
21 100 argon left 23 adult 1 46.43 1 9
23 112 argon right 44 adult 1 44.40 0 11
25 120 xenon left 47 adult 1 39.57 0 11
27 127 xenon right 48 adult 1 30.83 1 6
29 133 argon right 26 adult 1 66.27 0 10
31 150 argon left 10 juvenile 1 20.17 1 9
33 167 argon left 23 adult 1 58.43 0 12
35 176 argon right 5 juvenile 1 58.20 0 9
37 185 argon right 46 adult 1 57.43 0 6
39 190 argon right 5 juvenile 1 56.03 0 11
41 202 argon left 13 juvenile 1 67.53 0 9
43 214 xenon right 45 adult 1 61.40 0 9
45 220 argon right 11 juvenile 1 10.27 1 10
47 243 xenon left 1 juvenile 1 66.20 0 12
49 255 xenon left 10 juvenile 1 5.67 1 12
51 264 argon right 12 juvenile 1 58.83 0 9
53 266 argon right 36 adult 1 60.27 0 9
55 284 argon left 53 adult 1 5.77 1 10
57 295 xenon left 10 juvenile 1 5.90 1 11
59 300 xenon left 25 adult 1 25.63 1 10
61 302 argon left 14 juvenile 1 33.90 1 9
63 315 argon left 16 juvenile 1 1.73 1 10
65 324 xenon left 38 adult 1 46.90 0 9
67 328 argon left 14 juvenile 1 31.13 0 9
69 335 argon left 10 juvenile 1 30.20 1 9
71 342 argon left 17 juvenile 1 70.90 0 11
73 349 xenon right 44 adult 1 25.80 1 11
75 357 argon left 21 adult 1 5.73 1 9
77 368 xenon left 19 juvenile 1 53.43 0 9
79 385 argon right 13 juvenile 1 1.90 1 10
81 396 argon left 40 adult 1 9.90 1 10
83 405 argon right 9 juvenile 1 34.20 0 8
85 409 argon left 48 adult 1 46.73 0 10
87 419 xenon right 42 adult 1 18.73 0 10
89 429 xenon right 24 adult 1 32.03 0 11
91 433 argon left 55 adult 1 69.87 0 10
93 445 argon left 17 juvenile 1 66.80 0 11
95 454 argon right 5 juvenile 1 64.73 0 9
97 468 argon right 6 juvenile 1 1.70 1 10
99 480 xenon right 19 juvenile 1 1.77 1 9
101 485 xenon right 12 juvenile 1 29.03 0 8
103 491 xenon left 45 adult 1 56.57 0 9
105 503 xenon left 27 adult 1 8.30 1 9
107 515 argon right 43 adult 1 21.57 0 8
109 522 xenon left 4 juvenile 1 31.57 0 9
111 538 argon left 45 adult 1 31.63 0 10
113 547 xenon right 32 adult 1 39.77 0 11
115 550 xenon left 3 juvenile 1 18.70 1 10
117 554 argon right 14 juvenile 1 18.90 0 8
119 557 argon right 13 juvenile 1 56.80 0 10
121 561 xenon right 15 juvenile 1 55.60 0 10
123 568 argon left 10 juvenile 1 42.17 1 9
125 572 xenon left 6 juvenile 1 10.70 0 9
127 576 xenon left 17 juvenile 1 66.33 0 9
129 581 argon left 37 adult 1 52.33 0 12
131 606 xenon right 18 juvenile 1 58.17 0 9
133 610 xenon left 13 juvenile 1 14.30 1 9
135 615 xenon left 14 juvenile 1 25.83 0 12
137 618 xenon right 12 juvenile 1 45.40 0 10
139 624 argon right 9 juvenile 1 47.60 0 6
141 631 argon left 11 juvenile 1 13.33 1 12
143 636 argon left 10 juvenile 1 42.10 0 11
145 645 xenon right 5 juvenile 1 39.93 0 9
147 653 xenon left 15 juvenile 1 14.27 1 9
149 662 argon left 7 juvenile 1 34.57 1 12
151 664 argon left 2 juvenile 1 65.80 0 9
153 683 xenon left 22 adult 1 4.10 1 8
155 687 argon left 5 juvenile 1 60.93 0 11
157 701 xenon left 4 juvenile 1 57.20 0 10
159 706 xenon right 27 adult 1 38.07 0 8
161 717 xenon right 53 adult 1 54.10 0 11
163 722 xenon right 10 juvenile 1 59.27 0 9
165 731 xenon left 13 juvenile 1 21.57 1 12
167 740 argon left 12 juvenile 1 54.10 0 8
169 749 xenon left 24 adult 1 50.47 0 9
171 757 argon left 17 juvenile 1 46.17 0 9
173 760 xenon left 8 juvenile 1 46.30 0 11
175 766 xenon right 58 adult 1 38.83 0 12
177 769 xenon left 17 juvenile 1 44.60 0 9
179 772 argon left 12 juvenile 1 43.07 0 12
181 778 xenon left 25 adult 1 26.23 1 8
183 780 argon right 15 juvenile 1 41.60 0 9
185 793 xenon left 21 adult 1 38.07 0 11
187 800 xenon right 20 adult 1 65.23 0 9
189 804 xenon right 23 adult 1 7.07 1 10
191 810 xenon left 13 juvenile 1 13.77 1 10
193 815 xenon left 45 adult 1 9.63 0 10
195 832 argon right 5 juvenile 1 46.23 0 12
197 834 argon left 8 juvenile 1 45.73 0 9
199 838 xenon left 30 adult 1 33.63 1 9
201 857 argon left 7 juvenile 1 40.17 0 8
203 866 argon left 39 adult 1 63.33 1 11
205 887 argon right 26 adult 1 38.47 1 10
207 903 xenon right 50 adult 1 55.23 0 6
209 910 xenon left 34 adult 1 52.77 0 6
211 920 xenon left 10 juvenile 1 57.17 0 6
213 925 argon right 40 adult 1 9.87 0 10
215 931 xenon left 13 juvenile 1 57.90 0 12
217 936 argon left 7 juvenile 1 5.90 0 10
219 945 xenon left 11 juvenile 1 32.20 0 12
221 949 xenon right 13 juvenile 1 10.33 1 9
223 952 argon left 9 juvenile 1 6.13 1 12
225 962 argon left 5 juvenile 1 43.67 0 9
227 964 argon left 10 juvenile 1 38.30 0 9
229 971 argon right 23 adult 1 38.77 0 9
231 978 argon left 2 juvenile 1 38.07 0 12
233 983 xenon right 12 juvenile 1 38.30 0 11
235 987 xenon left 7 juvenile 1 26.20 1 10
237 1002 argon left 13 juvenile 1 62.57 0 9
239 1017 xenon left 50 adult 1 13.83 1 8
241 1029 xenon right 20 adult 1 46.50 0 12
243 1034 argon left 15 juvenile 1 11.07 1 11
245 1037 xenon right 30 adult 1 42.47 0 9
247 1042 xenon left 32 adult 1 38.73 0 9
249 1069 argon left 39 adult 1 51.13 0 11
251 1074 xenon left 4 juvenile 1 6.10 1 10
253 1098 argon left 3 juvenile 1 2.10 1 10
255 1102 argon right 10 juvenile 1 17.73 1 10
257 1112 argon left 6 juvenile 1 26.47 0 9
259 1117 argon right 15 juvenile 1 10.77 0 11
261 1126 argon right 33 adult 1 55.33 0 12
263 1135 xenon right 15 juvenile 1 58.67 0 9
265 1145 argon left 44 adult 1 12.93 1 10
267 1148 argon left 48 adult 1 54.20 0 9
269 1167 argon left 4 juvenile 1 49.57 0 10
271 1184 argon left 46 adult 1 24.43 1 12
273 1191 xenon left 25 adult 1 50.23 0 9
275 1205 xenon left 12 juvenile 1 13.97 1 11
277 1213 xenon right 12 juvenile 1 43.33 0 6
279 1228 argon right 26 adult 1 42.23 0 8
281 1247 xenon left 11 juvenile 1 74.93 0 9
283 1250 argon right 36 adult 1 66.93 0 9
285 1253 xenon right 12 juvenile 1 73.43 0 9
287 1267 xenon right 50 adult 1 67.47 0 12
289 1281 xenon right 44 adult 1 3.67 0 9
291 1287 argon left 8 juvenile 1 48.87 1 10
293 1293 xenon right 14 juvenile 1 65.60 0 9
295 1296 xenon left 18 juvenile 1 15.83 0 10
297 1309 xenon right 56 adult 1 20.07 0 11
299 1312 xenon left 9 juvenile 1 67.43 0 10
301 1317 argon right 15 juvenile 1 1.47 0 9
303 1321 xenon right 5 juvenile 1 62.93 0 11
305 1333 argon right 1 juvenile 1 6.30 1 9
307 1347 xenon right 1 juvenile 1 59.70 0 10
309 1361 xenon left 14 juvenile 1 13.80 1 10
311 1366 xenon right 57 adult 1 55.13 0 6
313 1373 argon left 8 juvenile 1 13.57 1 11
315 1397 xenon right 33 adult 1 42.20 0 11
317 1410 xenon left 46 adult 1 38.27 0 10
319 1413 argon right 3 juvenile 1 7.10 0 8
321 1425 argon left 35 adult 1 63.63 0 11
323 1447 argon left 8 juvenile 1 59.00 0 11
325 1461 xenon right 30 adult 1 54.37 0 9
327 1469 xenon right 51 adult 1 54.60 0 8
329 1480 argon left 42 adult 1 63.87 0 9
331 1487 argon right 20 adult 1 62.37 0 9
333 1491 xenon left 23 adult 1 62.80 0 11
335 1499 xenon right 22 adult 1 63.33 0 11
337 1503 xenon left 25 adult 1 58.53 0 9
339 1513 argon left 45 adult 1 58.07 0 12
341 1524 argon left 20 adult 1 58.50 0 10
343 1533 argon left 41 adult 1 1.50 1 9
345 1537 xenon right 19 juvenile 1 54.73 0 12
347 1552 xenon right 4 juvenile 1 50.63 0 12
349 1554 xenon left 36 adult 1 51.10 0 10
351 1562 xenon right 20 adult 1 49.93 0 9
353 1572 xenon right 24 adult 1 46.27 0 9
355 1581 argon right 28 adult 1 10.60 0 9
357 1585 xenon right 51 adult 1 42.77 0 8
359 1596 argon right 16 juvenile 1 34.37 1 9
361 1600 xenon right 16 juvenile 1 42.07 0 10
363 1603 xenon left 10 juvenile 1 38.77 0 9
365 1619 xenon left 20 adult 1 74.97 0 9
367 1627 xenon left 10 juvenile 1 6.57 1 10
369 1636 argon right 16 juvenile 1 38.87 1 6
371 1640 xenon left 10 juvenile 1 42.43 1 11
373 1643 xenon right 11 juvenile 1 67.07 0 9
375 1649 argon right 1 juvenile 1 2.70 1 10
377 1666 argon left 17 juvenile 1 63.80 0 6
379 1672 argon left 7 juvenile 1 32.63 0 9
381 1683 xenon right 29 adult 1 62.00 0 10
383 1688 xenon left 5 juvenile 1 13.10 1 11
385 1705 xenon left 1 juvenile 1 8.00 0 8
387 1717 argon left 22 adult 1 51.60 0 12
389 1727 argon right 33 adult 1 49.97 0 9
391 1746 argon right 3 juvenile 1 45.90 0 10
393 1749 argon right 32 adult 1 41.93 0 9
Using the retinopathy data set:
Select the age for patients that have futime more than 20.
Select the age for patients that have futime more than 20 and are adults.
Select patients that have no missing values in age.
$ age[retinopathy$ futime > 20 ]
[1] 28 28 12 12 9 9 9 9 13 12 12 8 12 12 21 23 23 44 47 47 48 48 26 10 23 23 5 5 46 46 5
[32] 5 13 13 45 1 1 12 12 36 36 10 25 25 14 38 38 14 14 10 10 17 17 44 21 19 19 13 9 9 48 24
[63] 55 17 17 5 5 19 12 12 45 45 43 4 4 45 45 32 32 13 13 15 10 10 17 17 37 18 13 14 14 12 12
[94] 9 9 10 10 5 5 7 2 5 5 4 4 27 53 53 10 13 12 12 24 24 17 17 8 8 58 58 17 17 12 12
[125] 25 25 15 21 21 20 20 23 5 5 8 30 30 7 7 39 39 26 50 50 34 34 10 10 13 13 11 11 9 5 5
[156] 10 10 23 2 2 12 12 7 7 13 20 30 30 32 32 39 39 4 10 6 6 33 33 15 15 48 48 4 4 46 25
[187] 25 12 12 12 26 26 11 11 36 36 12 12 50 50 8 8 14 14 56 9 9 5 5 1 1 57 57 33 33 46 46
[218] 35 35 8 8 30 30 51 42 42 20 20 23 23 22 25 25 45 45 20 20 19 19 4 36 36 20 24 24 51 51 16
[249] 16 16 16 10 10 20 20 10 16 16 10 10 11 11 17 17 7 7 29 29 5 22 22 33 3 32 32
$ age[retinopathy$ futime > 20 & retinopathy$ type == "adult" ]
[1] 28 28 21 23 23 44 47 47 48 48 26 23 23 46 46 45 36 36 25 25 38 38 44 21 48 24 55 45 45 43 45
[32] 45 32 32 37 27 53 53 24 24 58 58 25 25 21 21 20 20 23 30 30 39 39 26 50 50 34 34 23 20 30 30
[63] 32 32 39 39 33 33 48 48 46 25 25 26 26 36 36 50 50 56 57 57 33 33 46 46 35 35 30 30 51 42 42
[94] 20 20 23 23 22 25 25 45 45 20 20 36 36 20 24 24 51 51 20 20 29 29 22 22 33 32 32
! is.na (retinopathy$ age), ]
id laser eye age type trt futime status risk
1 5 argon left 28 adult 1 46.23 0 9
2 5 argon left 28 adult 0 46.23 0 9
3 14 argon right 12 juvenile 1 42.50 0 8
4 14 argon right 12 juvenile 0 31.30 1 6
5 16 xenon right 9 juvenile 1 42.27 0 11
6 16 xenon right 9 juvenile 0 42.27 0 11
7 25 argon left 9 juvenile 1 20.60 0 11
8 25 argon left 9 juvenile 0 20.60 0 11
9 29 xenon left 13 juvenile 1 38.77 0 9
10 29 xenon left 13 juvenile 0 0.30 1 10
11 46 xenon right 12 juvenile 1 65.23 0 9
12 46 xenon right 12 juvenile 0 54.27 1 9
13 49 argon right 8 juvenile 1 63.50 0 8
14 49 argon right 8 juvenile 0 10.80 1 6
15 56 xenon right 12 juvenile 1 23.17 0 8
16 56 xenon right 12 juvenile 0 23.17 0 9
17 61 argon right 16 juvenile 1 1.47 0 9
18 61 argon right 16 juvenile 0 1.47 0 10
19 71 argon right 21 adult 1 58.07 0 9
20 71 argon right 21 adult 0 13.83 1 9
21 100 argon left 23 adult 1 46.43 1 9
22 100 argon left 23 adult 0 48.53 0 9
23 112 argon right 44 adult 1 44.40 0 11
24 112 argon right 44 adult 0 7.90 1 12
25 120 xenon left 47 adult 1 39.57 0 11
26 120 xenon left 47 adult 0 39.57 0 6
27 127 xenon right 48 adult 1 30.83 1 6
28 127 xenon right 48 adult 0 38.57 1 10
29 133 argon right 26 adult 1 66.27 0 10
30 133 argon right 26 adult 0 14.10 1 9
31 150 argon left 10 juvenile 1 20.17 1 9
32 150 argon left 10 juvenile 0 6.90 1 10
33 167 argon left 23 adult 1 58.43 0 12
34 167 argon left 23 adult 0 41.40 1 9
35 176 argon right 5 juvenile 1 58.20 0 9
36 176 argon right 5 juvenile 0 58.20 0 9
37 185 argon right 46 adult 1 57.43 0 6
38 185 argon right 46 adult 0 57.43 0 8
39 190 argon right 5 juvenile 1 56.03 0 11
40 190 argon right 5 juvenile 0 56.03 0 12
41 202 argon left 13 juvenile 1 67.53 0 9
42 202 argon left 13 juvenile 0 67.53 0 9
43 214 xenon right 45 adult 1 61.40 0 9
44 214 xenon right 45 adult 0 0.60 1 12
45 220 argon right 11 juvenile 1 10.27 1 10
46 220 argon right 11 juvenile 0 1.63 1 10
47 243 xenon left 1 juvenile 1 66.20 0 12
48 243 xenon left 1 juvenile 0 66.20 0 11
49 255 xenon left 10 juvenile 1 5.67 1 12
50 255 xenon left 10 juvenile 0 13.83 1 9
51 264 argon right 12 juvenile 1 58.83 0 9
52 264 argon right 12 juvenile 0 29.97 1 11
53 266 argon right 36 adult 1 60.27 0 9
54 266 argon right 36 adult 0 26.37 1 11
55 284 argon left 53 adult 1 5.77 1 10
56 284 argon left 53 adult 0 1.33 1 12
57 295 xenon left 10 juvenile 1 5.90 1 11
58 295 xenon left 10 juvenile 0 35.53 1 11
59 300 xenon left 25 adult 1 25.63 1 10
60 300 xenon left 25 adult 0 21.90 1 9
61 302 argon left 14 juvenile 1 33.90 1 9
62 302 argon left 14 juvenile 0 14.80 1 9
63 315 argon left 16 juvenile 1 1.73 1 10
64 315 argon left 16 juvenile 0 6.20 1 8
65 324 xenon left 38 adult 1 46.90 0 9
66 324 xenon left 38 adult 0 22.00 1 8
67 328 argon left 14 juvenile 1 31.13 0 9
68 328 argon left 14 juvenile 0 31.13 0 9
69 335 argon left 10 juvenile 1 30.20 1 9
70 335 argon left 10 juvenile 0 22.00 1 11
71 342 argon left 17 juvenile 1 70.90 0 11
72 342 argon left 17 juvenile 0 70.90 0 12
73 349 xenon right 44 adult 1 25.80 1 11
74 349 xenon right 44 adult 0 13.87 1 8
75 357 argon left 21 adult 1 5.73 1 9
76 357 argon left 21 adult 0 48.30 1 9
77 368 xenon left 19 juvenile 1 53.43 0 9
78 368 xenon left 19 juvenile 0 53.43 0 9
79 385 argon right 13 juvenile 1 1.90 1 10
80 385 argon right 13 juvenile 0 51.10 0 12
81 396 argon left 40 adult 1 9.90 1 10
82 396 argon left 40 adult 0 9.90 1 9
83 405 argon right 9 juvenile 1 34.20 0 8
84 405 argon right 9 juvenile 0 34.20 0 12
85 409 argon left 48 adult 1 46.73 0 10
86 409 argon left 48 adult 0 2.67 1 12
87 419 xenon right 42 adult 1 18.73 0 10
88 419 xenon right 42 adult 0 13.83 1 10
89 429 xenon right 24 adult 1 32.03 0 11
90 429 xenon right 24 adult 0 4.27 1 10
91 433 argon left 55 adult 1 69.87 0 10
92 433 argon left 55 adult 0 13.90 1 10
93 445 argon left 17 juvenile 1 66.80 0 11
94 445 argon left 17 juvenile 0 66.80 0 9
95 454 argon right 5 juvenile 1 64.73 0 9
96 454 argon right 5 juvenile 0 64.73 0 8
97 468 argon right 6 juvenile 1 1.70 1 10
98 468 argon right 6 juvenile 0 1.70 1 6
99 480 xenon right 19 juvenile 1 1.77 1 9
100 480 xenon right 19 juvenile 0 43.03 1 12
101 485 xenon right 12 juvenile 1 29.03 0 8
102 485 xenon right 12 juvenile 0 29.03 0 8
103 491 xenon left 45 adult 1 56.57 0 9
104 491 xenon left 45 adult 0 56.57 0 9
105 503 xenon left 27 adult 1 8.30 1 9
106 503 xenon left 27 adult 0 8.30 1 10
107 515 argon right 43 adult 1 21.57 0 8
108 515 argon right 43 adult 0 18.43 1 9
109 522 xenon left 4 juvenile 1 31.57 0 9
110 522 xenon left 4 juvenile 0 31.57 0 8
111 538 argon left 45 adult 1 31.63 0 10
112 538 argon left 45 adult 0 31.63 1 9
113 547 xenon right 32 adult 1 39.77 0 11
114 547 xenon right 32 adult 0 39.77 0 10
115 550 xenon left 3 juvenile 1 18.70 1 10
116 550 xenon left 3 juvenile 0 6.53 1 11
117 554 argon right 14 juvenile 1 18.90 0 8
118 554 argon right 14 juvenile 0 18.90 0 9
119 557 argon right 13 juvenile 1 56.80 0 10
120 557 argon right 13 juvenile 0 22.23 1 8
121 561 xenon right 15 juvenile 1 55.60 0 10
122 561 xenon right 15 juvenile 0 14.00 1 9
123 568 argon left 10 juvenile 1 42.17 1 9
124 568 argon left 10 juvenile 0 42.17 1 10
125 572 xenon left 6 juvenile 1 10.70 0 9
126 572 xenon left 6 juvenile 0 5.33 1 9
127 576 xenon left 17 juvenile 1 66.33 0 9
128 576 xenon left 17 juvenile 0 59.80 1 10
129 581 argon left 37 adult 1 52.33 0 12
130 581 argon left 37 adult 0 5.83 1 11
131 606 xenon right 18 juvenile 1 58.17 0 9
132 606 xenon right 18 juvenile 0 2.17 1 12
133 610 xenon left 13 juvenile 1 14.30 1 9
134 610 xenon left 13 juvenile 0 48.43 1 8
135 615 xenon left 14 juvenile 1 25.83 0 12
136 615 xenon left 14 juvenile 0 25.83 0 10
137 618 xenon right 12 juvenile 1 45.40 0 10
138 618 xenon right 12 juvenile 0 45.40 0 9
139 624 argon right 9 juvenile 1 47.60 0 6
140 624 argon right 9 juvenile 0 47.60 0 9
141 631 argon left 11 juvenile 1 13.33 1 12
142 631 argon left 11 juvenile 0 9.60 1 10
143 636 argon left 10 juvenile 1 42.10 0 11
144 636 argon left 10 juvenile 0 42.10 0 11
145 645 xenon right 5 juvenile 1 39.93 0 9
146 645 xenon right 5 juvenile 0 39.93 0 6
147 653 xenon left 15 juvenile 1 14.27 1 9
148 653 xenon left 15 juvenile 0 7.60 1 12
149 662 argon left 7 juvenile 1 34.57 1 12
150 662 argon left 7 juvenile 0 1.80 1 12
151 664 argon left 2 juvenile 1 65.80 0 9
152 664 argon left 2 juvenile 0 4.30 1 12
153 683 xenon left 22 adult 1 4.10 1 8
154 683 xenon left 22 adult 0 12.20 1 6
155 687 argon left 5 juvenile 1 60.93 0 11
156 687 argon left 5 juvenile 0 60.93 0 12
157 701 xenon left 4 juvenile 1 57.20 0 10
158 701 xenon left 4 juvenile 0 57.20 0 9
159 706 xenon right 27 adult 1 38.07 0 8
160 706 xenon right 27 adult 0 12.73 1 10
161 717 xenon right 53 adult 1 54.10 0 11
162 717 xenon right 53 adult 0 54.10 1 11
163 722 xenon right 10 juvenile 1 59.27 0 9
164 722 xenon right 10 juvenile 0 9.40 1 12
165 731 xenon left 13 juvenile 1 21.57 1 12
166 731 xenon left 13 juvenile 0 9.90 1 10
167 740 argon left 12 juvenile 1 54.10 0 8
168 740 argon left 12 juvenile 0 54.10 0 8
169 749 xenon left 24 adult 1 50.47 0 9
170 749 xenon left 24 adult 0 50.47 0 11
171 757 argon left 17 juvenile 1 46.17 0 9
172 757 argon left 17 juvenile 0 46.17 0 12
173 760 xenon left 8 juvenile 1 46.30 0 11
174 760 xenon left 8 juvenile 0 46.30 0 11
175 766 xenon right 58 adult 1 38.83 0 12
176 766 xenon right 58 adult 0 38.83 0 9
177 769 xenon left 17 juvenile 1 44.60 0 9
178 769 xenon left 17 juvenile 0 44.60 0 9
179 772 argon left 12 juvenile 1 43.07 0 12
180 772 argon left 12 juvenile 0 43.07 0 9
181 778 xenon left 25 adult 1 26.23 1 8
182 778 xenon left 25 adult 0 40.03 0 8
183 780 argon right 15 juvenile 1 41.60 0 9
184 780 argon right 15 juvenile 0 18.03 1 11
185 793 xenon left 21 adult 1 38.07 0 11
186 793 xenon left 21 adult 0 38.07 0 11
187 800 xenon right 20 adult 1 65.23 0 9
188 800 xenon right 20 adult 0 65.23 0 9
189 804 xenon right 23 adult 1 7.07 1 10
190 804 xenon right 23 adult 0 66.77 0 12
191 810 xenon left 13 juvenile 1 13.77 1 10
192 810 xenon left 13 juvenile 0 13.77 1 12
193 815 xenon left 45 adult 1 9.63 0 10
194 815 xenon left 45 adult 0 9.63 1 12
195 832 argon right 5 juvenile 1 46.23 0 12
196 832 argon right 5 juvenile 0 46.23 0 12
197 834 argon left 8 juvenile 1 45.73 0 9
198 834 argon left 8 juvenile 0 1.50 1 12
199 838 xenon left 30 adult 1 33.63 1 9
200 838 xenon left 30 adult 0 33.63 1 9
201 857 argon left 7 juvenile 1 40.17 0 8
202 857 argon left 7 juvenile 0 40.17 0 6
203 866 argon left 39 adult 1 63.33 1 11
204 866 argon left 39 adult 0 27.60 1 10
205 887 argon right 26 adult 1 38.47 1 10
206 887 argon right 26 adult 0 1.63 1 10
207 903 xenon right 50 adult 1 55.23 0 6
208 903 xenon right 50 adult 0 55.23 0 8
209 910 xenon left 34 adult 1 52.77 0 6
210 910 xenon left 34 adult 0 25.30 1 10
211 920 xenon left 10 juvenile 1 57.17 0 6
212 920 xenon left 10 juvenile 0 46.20 1 8
213 925 argon right 40 adult 1 9.87 0 10
214 925 argon right 40 adult 0 1.70 1 10
215 931 xenon left 13 juvenile 1 57.90 0 12
216 931 xenon left 13 juvenile 0 57.90 0 11
217 936 argon left 7 juvenile 1 5.90 0 10
218 936 argon left 7 juvenile 0 5.90 0 12
219 945 xenon left 11 juvenile 1 32.20 0 12
220 945 xenon left 11 juvenile 0 32.20 0 12
221 949 xenon right 13 juvenile 1 10.33 1 9
222 949 xenon right 13 juvenile 0 0.83 1 10
223 952 argon left 9 juvenile 1 6.13 1 12
224 952 argon left 9 juvenile 0 50.90 0 9
225 962 argon left 5 juvenile 1 43.67 0 9
226 962 argon left 5 juvenile 0 25.93 1 9
227 964 argon left 10 juvenile 1 38.30 0 9
228 964 argon left 10 juvenile 0 38.30 0 9
229 971 argon right 23 adult 1 38.77 0 9
230 971 argon right 23 adult 0 19.40 1 10
231 978 argon left 2 juvenile 1 38.07 0 12
232 978 argon left 2 juvenile 0 21.97 1 10
233 983 xenon right 12 juvenile 1 38.30 0 11
234 983 xenon right 12 juvenile 0 38.30 0 11
235 987 xenon left 7 juvenile 1 26.20 1 10
236 987 xenon left 7 juvenile 0 70.03 0 9
237 1002 argon left 13 juvenile 1 62.57 0 9
238 1002 argon left 13 juvenile 0 18.03 1 11
239 1017 xenon left 50 adult 1 13.83 1 8
240 1017 xenon left 50 adult 0 1.57 1 9
241 1029 xenon right 20 adult 1 46.50 0 12
242 1029 xenon right 20 adult 0 13.37 1 12
243 1034 argon left 15 juvenile 1 11.07 1 11
244 1034 argon left 15 juvenile 0 1.97 1 9
245 1037 xenon right 30 adult 1 42.47 0 9
246 1037 xenon right 30 adult 0 22.20 1 9
247 1042 xenon left 32 adult 1 38.73 0 9
248 1042 xenon left 32 adult 0 38.73 0 9
249 1069 argon left 39 adult 1 51.13 0 11
250 1069 argon left 39 adult 0 51.13 0 11
251 1074 xenon left 4 juvenile 1 6.10 1 10
252 1074 xenon left 4 juvenile 0 46.50 0 11
253 1098 argon left 3 juvenile 1 2.10 1 10
254 1098 argon left 3 juvenile 0 11.30 1 11
255 1102 argon right 10 juvenile 1 17.73 1 10
256 1102 argon right 10 juvenile 0 42.30 0 9
257 1112 argon left 6 juvenile 1 26.47 0 9
258 1112 argon left 6 juvenile 0 26.47 0 10
259 1117 argon right 15 juvenile 1 10.77 0 11
260 1117 argon right 15 juvenile 0 10.77 0 11
261 1126 argon right 33 adult 1 55.33 0 12
262 1126 argon right 33 adult 0 55.33 0 10
263 1135 xenon right 15 juvenile 1 58.67 0 9
264 1135 xenon right 15 juvenile 0 58.67 0 9
265 1145 argon left 44 adult 1 12.93 1 10
266 1145 argon left 44 adult 0 4.97 1 9
267 1148 argon left 48 adult 1 54.20 0 9
268 1148 argon left 48 adult 0 26.47 1 12
269 1167 argon left 4 juvenile 1 49.57 0 10
270 1167 argon left 4 juvenile 0 49.57 0 9
271 1184 argon left 46 adult 1 24.43 1 12
272 1184 argon left 46 adult 0 9.87 1 11
273 1191 xenon left 25 adult 1 50.23 0 9
274 1191 xenon left 25 adult 0 50.23 0 9
275 1205 xenon left 12 juvenile 1 13.97 1 11
276 1205 xenon left 12 juvenile 0 30.40 1 12
277 1213 xenon right 12 juvenile 1 43.33 0 6
278 1213 xenon right 12 juvenile 0 43.33 1 10
279 1228 argon right 26 adult 1 42.23 0 8
280 1228 argon right 26 adult 0 42.23 0 8
281 1247 xenon left 11 juvenile 1 74.93 0 9
282 1247 xenon left 11 juvenile 0 74.93 0 9
283 1250 argon right 36 adult 1 66.93 0 9
284 1250 argon right 36 adult 0 66.93 0 9
285 1253 xenon right 12 juvenile 1 73.43 0 9
286 1253 xenon right 12 juvenile 0 73.43 0 9
287 1267 xenon right 50 adult 1 67.47 0 12
288 1267 xenon right 50 adult 0 38.57 1 11
289 1281 xenon right 44 adult 1 3.67 0 9
290 1281 xenon right 44 adult 0 3.67 1 10
291 1287 argon left 8 juvenile 1 48.87 1 10
292 1287 argon left 8 juvenile 0 67.03 0 9
293 1293 xenon right 14 juvenile 1 65.60 0 9
294 1293 xenon right 14 juvenile 0 65.60 0 9
295 1296 xenon left 18 juvenile 1 15.83 0 10
296 1296 xenon left 18 juvenile 0 15.83 1 10
297 1309 xenon right 56 adult 1 20.07 0 11
298 1309 xenon right 56 adult 0 8.83 1 8
299 1312 xenon left 9 juvenile 1 67.43 0 10
300 1312 xenon left 9 juvenile 0 67.43 0 9
301 1317 argon right 15 juvenile 1 1.47 0 9
302 1317 argon right 15 juvenile 0 1.47 0 6
303 1321 xenon right 5 juvenile 1 62.93 0 11
304 1321 xenon right 5 juvenile 0 22.13 1 9
305 1333 argon right 1 juvenile 1 6.30 1 9
306 1333 argon right 1 juvenile 0 56.97 0 11
307 1347 xenon right 1 juvenile 1 59.70 0 10
308 1347 xenon right 1 juvenile 0 18.93 1 10
309 1361 xenon left 14 juvenile 1 13.80 1 10
310 1361 xenon left 14 juvenile 0 19.00 1 9
311 1366 xenon right 57 adult 1 55.13 0 6
312 1366 xenon right 57 adult 0 55.13 0 6
313 1373 argon left 8 juvenile 1 13.57 1 11
314 1373 argon left 8 juvenile 0 5.43 1 11
315 1397 xenon right 33 adult 1 42.20 0 11
316 1397 xenon right 33 adult 0 42.20 0 11
317 1410 xenon left 46 adult 1 38.27 0 10
318 1410 xenon left 46 adult 0 38.27 0 9
319 1413 argon right 3 juvenile 1 7.10 0 8
320 1413 argon right 3 juvenile 0 7.10 1 12
321 1425 argon left 35 adult 1 63.63 0 11
322 1425 argon left 35 adult 0 26.17 1 11
323 1447 argon left 8 juvenile 1 59.00 0 11
324 1447 argon left 8 juvenile 0 24.73 1 11
325 1461 xenon right 30 adult 1 54.37 0 9
326 1461 xenon right 30 adult 0 54.37 0 10
327 1469 xenon right 51 adult 1 54.60 0 8
328 1469 xenon right 51 adult 0 10.97 1 12
329 1480 argon left 42 adult 1 63.87 0 9
330 1480 argon left 42 adult 0 21.10 1 9
331 1487 argon right 20 adult 1 62.37 0 9
332 1487 argon right 20 adult 0 43.70 1 8
333 1491 xenon left 23 adult 1 62.80 0 11
334 1491 xenon left 23 adult 0 62.80 0 9
335 1499 xenon right 22 adult 1 63.33 0 11
336 1499 xenon right 22 adult 0 14.37 1 9
337 1503 xenon left 25 adult 1 58.53 0 9
338 1503 xenon left 25 adult 0 58.53 0 9
339 1513 argon left 45 adult 1 58.07 0 12
340 1513 argon left 45 adult 0 58.07 0 11
341 1524 argon left 20 adult 1 58.50 0 10
342 1524 argon left 20 adult 0 58.50 0 9
343 1533 argon left 41 adult 1 1.50 1 9
344 1533 argon left 41 adult 0 14.37 0 9
345 1537 xenon right 19 juvenile 1 54.73 0 12
346 1537 xenon right 19 juvenile 0 38.40 1 10
347 1552 xenon right 4 juvenile 1 50.63 0 12
348 1552 xenon right 4 juvenile 0 2.83 1 11
349 1554 xenon left 36 adult 1 51.10 0 10
350 1554 xenon left 36 adult 0 51.10 0 9
351 1562 xenon right 20 adult 1 49.93 0 9
352 1562 xenon right 20 adult 0 6.57 1 9
353 1572 xenon right 24 adult 1 46.27 0 9
354 1572 xenon right 24 adult 0 46.27 1 9
355 1581 argon right 28 adult 1 10.60 0 9
356 1581 argon right 28 adult 0 10.60 0 10
357 1585 xenon right 51 adult 1 42.77 0 8
358 1585 xenon right 51 adult 0 42.77 0 12
359 1596 argon right 16 juvenile 1 34.37 1 9
360 1596 argon right 16 juvenile 0 42.27 0 10
361 1600 xenon right 16 juvenile 1 42.07 0 10
362 1600 xenon right 16 juvenile 0 42.07 0 10
363 1603 xenon left 10 juvenile 1 38.77 0 9
364 1603 xenon left 10 juvenile 0 38.77 0 9
365 1619 xenon left 20 adult 1 74.97 0 9
366 1619 xenon left 20 adult 0 61.83 1 12
367 1627 xenon left 10 juvenile 1 6.57 1 10
368 1627 xenon left 10 juvenile 0 66.97 0 12
369 1636 argon right 16 juvenile 1 38.87 1 6
370 1636 argon right 16 juvenile 0 68.30 0 6
371 1640 xenon left 10 juvenile 1 42.43 1 11
372 1640 xenon left 10 juvenile 0 46.63 1 9
373 1643 xenon right 11 juvenile 1 67.07 0 9
374 1643 xenon right 11 juvenile 0 67.07 0 9
375 1649 argon right 1 juvenile 1 2.70 1 10
376 1649 argon right 1 juvenile 0 2.70 0 12
377 1666 argon left 17 juvenile 1 63.80 0 6
378 1666 argon left 17 juvenile 0 63.80 0 8
379 1672 argon left 7 juvenile 1 32.63 0 9
380 1672 argon left 7 juvenile 0 32.63 0 9
381 1683 xenon right 29 adult 1 62.00 0 10
382 1683 xenon right 29 adult 0 62.00 0 8
383 1688 xenon left 5 juvenile 1 13.10 1 11
384 1688 xenon left 5 juvenile 0 54.80 0 10
385 1705 xenon left 1 juvenile 1 8.00 0 8
386 1705 xenon left 1 juvenile 0 8.00 0 8
387 1717 argon left 22 adult 1 51.60 0 12
388 1717 argon left 22 adult 0 42.33 1 11
389 1727 argon right 33 adult 1 49.97 0 9
390 1727 argon right 33 adult 0 2.90 1 10
391 1746 argon right 3 juvenile 1 45.90 0 10
392 1746 argon right 3 juvenile 0 1.43 1 10
393 1749 argon right 32 adult 1 41.93 0 9
394 1749 argon right 32 adult 0 41.93 0 9
Using the retinopathy data set:
Select only the rows of the left eye.
Select only the rows of adult patients.
$ eye == "left" , ]
id laser eye age type trt futime status risk
1 5 argon left 28 adult 1 46.23 0 9
2 5 argon left 28 adult 0 46.23 0 9
7 25 argon left 9 juvenile 1 20.60 0 11
8 25 argon left 9 juvenile 0 20.60 0 11
9 29 xenon left 13 juvenile 1 38.77 0 9
10 29 xenon left 13 juvenile 0 0.30 1 10
21 100 argon left 23 adult 1 46.43 1 9
22 100 argon left 23 adult 0 48.53 0 9
25 120 xenon left 47 adult 1 39.57 0 11
26 120 xenon left 47 adult 0 39.57 0 6
31 150 argon left 10 juvenile 1 20.17 1 9
32 150 argon left 10 juvenile 0 6.90 1 10
33 167 argon left 23 adult 1 58.43 0 12
34 167 argon left 23 adult 0 41.40 1 9
41 202 argon left 13 juvenile 1 67.53 0 9
42 202 argon left 13 juvenile 0 67.53 0 9
47 243 xenon left 1 juvenile 1 66.20 0 12
48 243 xenon left 1 juvenile 0 66.20 0 11
49 255 xenon left 10 juvenile 1 5.67 1 12
50 255 xenon left 10 juvenile 0 13.83 1 9
55 284 argon left 53 adult 1 5.77 1 10
56 284 argon left 53 adult 0 1.33 1 12
57 295 xenon left 10 juvenile 1 5.90 1 11
58 295 xenon left 10 juvenile 0 35.53 1 11
59 300 xenon left 25 adult 1 25.63 1 10
60 300 xenon left 25 adult 0 21.90 1 9
61 302 argon left 14 juvenile 1 33.90 1 9
62 302 argon left 14 juvenile 0 14.80 1 9
63 315 argon left 16 juvenile 1 1.73 1 10
64 315 argon left 16 juvenile 0 6.20 1 8
65 324 xenon left 38 adult 1 46.90 0 9
66 324 xenon left 38 adult 0 22.00 1 8
67 328 argon left 14 juvenile 1 31.13 0 9
68 328 argon left 14 juvenile 0 31.13 0 9
69 335 argon left 10 juvenile 1 30.20 1 9
70 335 argon left 10 juvenile 0 22.00 1 11
71 342 argon left 17 juvenile 1 70.90 0 11
72 342 argon left 17 juvenile 0 70.90 0 12
75 357 argon left 21 adult 1 5.73 1 9
76 357 argon left 21 adult 0 48.30 1 9
77 368 xenon left 19 juvenile 1 53.43 0 9
78 368 xenon left 19 juvenile 0 53.43 0 9
81 396 argon left 40 adult 1 9.90 1 10
82 396 argon left 40 adult 0 9.90 1 9
85 409 argon left 48 adult 1 46.73 0 10
86 409 argon left 48 adult 0 2.67 1 12
91 433 argon left 55 adult 1 69.87 0 10
92 433 argon left 55 adult 0 13.90 1 10
93 445 argon left 17 juvenile 1 66.80 0 11
94 445 argon left 17 juvenile 0 66.80 0 9
103 491 xenon left 45 adult 1 56.57 0 9
104 491 xenon left 45 adult 0 56.57 0 9
105 503 xenon left 27 adult 1 8.30 1 9
106 503 xenon left 27 adult 0 8.30 1 10
109 522 xenon left 4 juvenile 1 31.57 0 9
110 522 xenon left 4 juvenile 0 31.57 0 8
111 538 argon left 45 adult 1 31.63 0 10
112 538 argon left 45 adult 0 31.63 1 9
115 550 xenon left 3 juvenile 1 18.70 1 10
116 550 xenon left 3 juvenile 0 6.53 1 11
123 568 argon left 10 juvenile 1 42.17 1 9
124 568 argon left 10 juvenile 0 42.17 1 10
125 572 xenon left 6 juvenile 1 10.70 0 9
126 572 xenon left 6 juvenile 0 5.33 1 9
127 576 xenon left 17 juvenile 1 66.33 0 9
128 576 xenon left 17 juvenile 0 59.80 1 10
129 581 argon left 37 adult 1 52.33 0 12
130 581 argon left 37 adult 0 5.83 1 11
133 610 xenon left 13 juvenile 1 14.30 1 9
134 610 xenon left 13 juvenile 0 48.43 1 8
135 615 xenon left 14 juvenile 1 25.83 0 12
136 615 xenon left 14 juvenile 0 25.83 0 10
141 631 argon left 11 juvenile 1 13.33 1 12
142 631 argon left 11 juvenile 0 9.60 1 10
143 636 argon left 10 juvenile 1 42.10 0 11
144 636 argon left 10 juvenile 0 42.10 0 11
147 653 xenon left 15 juvenile 1 14.27 1 9
148 653 xenon left 15 juvenile 0 7.60 1 12
149 662 argon left 7 juvenile 1 34.57 1 12
150 662 argon left 7 juvenile 0 1.80 1 12
151 664 argon left 2 juvenile 1 65.80 0 9
152 664 argon left 2 juvenile 0 4.30 1 12
153 683 xenon left 22 adult 1 4.10 1 8
154 683 xenon left 22 adult 0 12.20 1 6
155 687 argon left 5 juvenile 1 60.93 0 11
156 687 argon left 5 juvenile 0 60.93 0 12
157 701 xenon left 4 juvenile 1 57.20 0 10
158 701 xenon left 4 juvenile 0 57.20 0 9
165 731 xenon left 13 juvenile 1 21.57 1 12
166 731 xenon left 13 juvenile 0 9.90 1 10
167 740 argon left 12 juvenile 1 54.10 0 8
168 740 argon left 12 juvenile 0 54.10 0 8
169 749 xenon left 24 adult 1 50.47 0 9
170 749 xenon left 24 adult 0 50.47 0 11
171 757 argon left 17 juvenile 1 46.17 0 9
172 757 argon left 17 juvenile 0 46.17 0 12
173 760 xenon left 8 juvenile 1 46.30 0 11
174 760 xenon left 8 juvenile 0 46.30 0 11
177 769 xenon left 17 juvenile 1 44.60 0 9
178 769 xenon left 17 juvenile 0 44.60 0 9
179 772 argon left 12 juvenile 1 43.07 0 12
180 772 argon left 12 juvenile 0 43.07 0 9
181 778 xenon left 25 adult 1 26.23 1 8
182 778 xenon left 25 adult 0 40.03 0 8
185 793 xenon left 21 adult 1 38.07 0 11
186 793 xenon left 21 adult 0 38.07 0 11
191 810 xenon left 13 juvenile 1 13.77 1 10
192 810 xenon left 13 juvenile 0 13.77 1 12
193 815 xenon left 45 adult 1 9.63 0 10
194 815 xenon left 45 adult 0 9.63 1 12
197 834 argon left 8 juvenile 1 45.73 0 9
198 834 argon left 8 juvenile 0 1.50 1 12
199 838 xenon left 30 adult 1 33.63 1 9
200 838 xenon left 30 adult 0 33.63 1 9
201 857 argon left 7 juvenile 1 40.17 0 8
202 857 argon left 7 juvenile 0 40.17 0 6
203 866 argon left 39 adult 1 63.33 1 11
204 866 argon left 39 adult 0 27.60 1 10
209 910 xenon left 34 adult 1 52.77 0 6
210 910 xenon left 34 adult 0 25.30 1 10
211 920 xenon left 10 juvenile 1 57.17 0 6
212 920 xenon left 10 juvenile 0 46.20 1 8
215 931 xenon left 13 juvenile 1 57.90 0 12
216 931 xenon left 13 juvenile 0 57.90 0 11
217 936 argon left 7 juvenile 1 5.90 0 10
218 936 argon left 7 juvenile 0 5.90 0 12
219 945 xenon left 11 juvenile 1 32.20 0 12
220 945 xenon left 11 juvenile 0 32.20 0 12
223 952 argon left 9 juvenile 1 6.13 1 12
224 952 argon left 9 juvenile 0 50.90 0 9
225 962 argon left 5 juvenile 1 43.67 0 9
226 962 argon left 5 juvenile 0 25.93 1 9
227 964 argon left 10 juvenile 1 38.30 0 9
228 964 argon left 10 juvenile 0 38.30 0 9
231 978 argon left 2 juvenile 1 38.07 0 12
232 978 argon left 2 juvenile 0 21.97 1 10
235 987 xenon left 7 juvenile 1 26.20 1 10
236 987 xenon left 7 juvenile 0 70.03 0 9
237 1002 argon left 13 juvenile 1 62.57 0 9
238 1002 argon left 13 juvenile 0 18.03 1 11
239 1017 xenon left 50 adult 1 13.83 1 8
240 1017 xenon left 50 adult 0 1.57 1 9
243 1034 argon left 15 juvenile 1 11.07 1 11
244 1034 argon left 15 juvenile 0 1.97 1 9
247 1042 xenon left 32 adult 1 38.73 0 9
248 1042 xenon left 32 adult 0 38.73 0 9
249 1069 argon left 39 adult 1 51.13 0 11
250 1069 argon left 39 adult 0 51.13 0 11
251 1074 xenon left 4 juvenile 1 6.10 1 10
252 1074 xenon left 4 juvenile 0 46.50 0 11
253 1098 argon left 3 juvenile 1 2.10 1 10
254 1098 argon left 3 juvenile 0 11.30 1 11
257 1112 argon left 6 juvenile 1 26.47 0 9
258 1112 argon left 6 juvenile 0 26.47 0 10
265 1145 argon left 44 adult 1 12.93 1 10
266 1145 argon left 44 adult 0 4.97 1 9
267 1148 argon left 48 adult 1 54.20 0 9
268 1148 argon left 48 adult 0 26.47 1 12
269 1167 argon left 4 juvenile 1 49.57 0 10
270 1167 argon left 4 juvenile 0 49.57 0 9
271 1184 argon left 46 adult 1 24.43 1 12
272 1184 argon left 46 adult 0 9.87 1 11
273 1191 xenon left 25 adult 1 50.23 0 9
274 1191 xenon left 25 adult 0 50.23 0 9
275 1205 xenon left 12 juvenile 1 13.97 1 11
276 1205 xenon left 12 juvenile 0 30.40 1 12
281 1247 xenon left 11 juvenile 1 74.93 0 9
282 1247 xenon left 11 juvenile 0 74.93 0 9
291 1287 argon left 8 juvenile 1 48.87 1 10
292 1287 argon left 8 juvenile 0 67.03 0 9
295 1296 xenon left 18 juvenile 1 15.83 0 10
296 1296 xenon left 18 juvenile 0 15.83 1 10
299 1312 xenon left 9 juvenile 1 67.43 0 10
300 1312 xenon left 9 juvenile 0 67.43 0 9
309 1361 xenon left 14 juvenile 1 13.80 1 10
310 1361 xenon left 14 juvenile 0 19.00 1 9
313 1373 argon left 8 juvenile 1 13.57 1 11
314 1373 argon left 8 juvenile 0 5.43 1 11
317 1410 xenon left 46 adult 1 38.27 0 10
318 1410 xenon left 46 adult 0 38.27 0 9
321 1425 argon left 35 adult 1 63.63 0 11
322 1425 argon left 35 adult 0 26.17 1 11
323 1447 argon left 8 juvenile 1 59.00 0 11
324 1447 argon left 8 juvenile 0 24.73 1 11
329 1480 argon left 42 adult 1 63.87 0 9
330 1480 argon left 42 adult 0 21.10 1 9
333 1491 xenon left 23 adult 1 62.80 0 11
334 1491 xenon left 23 adult 0 62.80 0 9
337 1503 xenon left 25 adult 1 58.53 0 9
338 1503 xenon left 25 adult 0 58.53 0 9
339 1513 argon left 45 adult 1 58.07 0 12
340 1513 argon left 45 adult 0 58.07 0 11
341 1524 argon left 20 adult 1 58.50 0 10
342 1524 argon left 20 adult 0 58.50 0 9
343 1533 argon left 41 adult 1 1.50 1 9
344 1533 argon left 41 adult 0 14.37 0 9
349 1554 xenon left 36 adult 1 51.10 0 10
350 1554 xenon left 36 adult 0 51.10 0 9
363 1603 xenon left 10 juvenile 1 38.77 0 9
364 1603 xenon left 10 juvenile 0 38.77 0 9
365 1619 xenon left 20 adult 1 74.97 0 9
366 1619 xenon left 20 adult 0 61.83 1 12
367 1627 xenon left 10 juvenile 1 6.57 1 10
368 1627 xenon left 10 juvenile 0 66.97 0 12
371 1640 xenon left 10 juvenile 1 42.43 1 11
372 1640 xenon left 10 juvenile 0 46.63 1 9
377 1666 argon left 17 juvenile 1 63.80 0 6
378 1666 argon left 17 juvenile 0 63.80 0 8
379 1672 argon left 7 juvenile 1 32.63 0 9
380 1672 argon left 7 juvenile 0 32.63 0 9
383 1688 xenon left 5 juvenile 1 13.10 1 11
384 1688 xenon left 5 juvenile 0 54.80 0 10
385 1705 xenon left 1 juvenile 1 8.00 0 8
386 1705 xenon left 1 juvenile 0 8.00 0 8
387 1717 argon left 22 adult 1 51.60 0 12
388 1717 argon left 22 adult 0 42.33 1 11
$ type == "adult" , ]
id laser eye age type trt futime status risk
1 5 argon left 28 adult 1 46.23 0 9
2 5 argon left 28 adult 0 46.23 0 9
19 71 argon right 21 adult 1 58.07 0 9
20 71 argon right 21 adult 0 13.83 1 9
21 100 argon left 23 adult 1 46.43 1 9
22 100 argon left 23 adult 0 48.53 0 9
23 112 argon right 44 adult 1 44.40 0 11
24 112 argon right 44 adult 0 7.90 1 12
25 120 xenon left 47 adult 1 39.57 0 11
26 120 xenon left 47 adult 0 39.57 0 6
27 127 xenon right 48 adult 1 30.83 1 6
28 127 xenon right 48 adult 0 38.57 1 10
29 133 argon right 26 adult 1 66.27 0 10
30 133 argon right 26 adult 0 14.10 1 9
33 167 argon left 23 adult 1 58.43 0 12
34 167 argon left 23 adult 0 41.40 1 9
37 185 argon right 46 adult 1 57.43 0 6
38 185 argon right 46 adult 0 57.43 0 8
43 214 xenon right 45 adult 1 61.40 0 9
44 214 xenon right 45 adult 0 0.60 1 12
53 266 argon right 36 adult 1 60.27 0 9
54 266 argon right 36 adult 0 26.37 1 11
55 284 argon left 53 adult 1 5.77 1 10
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